during meiosis
During meiosis
A chromosomal mutation can occur either during the formation of the egg or sperm, or after fertilization when the zygote is forming. This means the mutation could have occurred in the parent's gametes, or during cell division in the early stages of embryo development.
during meiosis
Down syndrome is typically caused by an extra copy of chromosome 21, resulting from a process called nondisjunction, which occurs during cell division. This mutation can happen during the formation of the egg or sperm, or during the early stages of embryonic development. As a result, the genetic change that leads to Down syndrome occurs before or at the time of conception. Therefore, the mutation is present from the moment of fertilization.
A normal human baby is born with 10 toes, 5 on each foot. Occasionally a genetic mutation will occur and baby will be born with more or less toes.
during meiosis
During meiosis
During meiosis
During meiosis
A chromosomal mutation can occur either during the formation of the egg or sperm, or after fertilization when the zygote is forming. This means the mutation could have occurred in the parent's gametes, or during cell division in the early stages of embryo development.
during meiosis
A normal human baby is born with 10 toes, 5 on each foot. Occasionally a genetic mutation will occur and baby will be born with more or less toes.
A normal human baby is born with 10 toes, 5 on each foot. Occasionally a genetic mutation will occur and baby will be born with more or less toes.
A normal human baby is born with 10 toes, 5 on each foot. Occasionally a genetic mutation will occur and baby will be born with more or less toes.
A normal human baby is born with 10 toes, 5 on each foot. Occasionally a genetic mutation will occur and baby will be born with more or less toes.
I searched for canine trisomy in the internet. It looks like they can have a trisomy 1 whcih causes some types of cancers, trysomy 13 (thyroid issues) and 18. The word is actually trisomyism. Downs is trisomy 21. Humans are also sometimes born with a trisomy 19. Each has it's own name after the doctor who discovered them, Edwards, Downs, and Bach. Did not find any canine with trisomy 21
Trisomy 18, also known as Edwards syndrome, occurs in approximately 1 in 5,000 live births. In the United States, this translates to about 20 babies born with trisomy 18 each year, which averages to roughly 1 to 2 babies per day. However, many pregnancies with trisomy 18 result in miscarriage or stillbirth, so the number of live births is significantly lower.